Pipe-patching device.



W.'H. CROW.

PIPE PATCHING DEVICE. 7 APPLICATION FILED JULY 28.1914.

1,156,890. Patented Oct. 19, 1915.

2 SHEETSSHEET I.

W. H. CROW.

PIPE PATCHING DEVICE.

APPLICATION FILED IULY 2a. 1914.

1,156,890. Patented 001.19, 1915.

= 2 SHEETSSHEET 2.

patch in perspective.

WILLIAM H. cRow'ioF s'AN YsInRo, CALIFORNIA.

PIPE-PATCHiNG DEVICE.

To all whom-it may concern:

citizen of the United States, residingfat San Ysidro, in the county of San Diego and State of California, have-invented new and useful Improvements in Pipe-Patching De.- vices, of which the following is a specifi cation. 7 q

This invention relates to improvements in pipe patching devices andh as particular application to a plug patch. 7 I

In carrying out the present invention, it is my purpose to provide a patching device whereby the holes in pipes may be reamed out so as to eliminate ragged edges and form a new surface and the plug subsequently expanded within the opening to bind'against the side wall thereof thereby forming a'fluid' tight patch. i

It is also my purpose to provide a device of the class described which will embody among other features a plug' capable of movement into the hole or aperture in the pipe and which may be subsequently eX- panded to completely fill the hole, and a chuck for forcingthe plug. through the hole in the pipe and expanding such plug.

With the above and'other objects in View, the invention consistsin the construction, combination and arrangement of parts hereinafter set forth in and falling within the" scope of the claims. j v In the accompanying drawings; Figure'l is a View in side elevation of a pipe patching device constructed in accordance with the present invention, the plug being shown in serted" in the pipe. Fig. 2 is a view in side elevation of the-plug removed from thepipe. Fig. is a' vertical central sectional view throughthe plug. Fig. 4 is a cross sectional view on the line 44 of Fig. 2. Fig. 5 isa view in side elevation ofth e core of the'plug. Fig. 6 is a view in side elevation of'the chuck removed from the plug. Fig. 7 is a vertical central sectional view, through the chuck. Fig. S isa' fragmentary sectional view entire line. 88 of Fig. 9 is a vie'w'in side elevation of the plug. Fig. 10 is a collective view showing parts of the Referring now to the drawings in detail, 1 designates'the plug as an entirety, such plug comprising a metal core in the form of a rod 'eha ing one end thereof screw threaded as at? and formed at diametrically op positepoint's' with flat portions 4 and the Specification of Letters Patent.

7 opposite end portion circumferentially en'- Be it known that I, WILLIAM H. Cnow, a

" portion of the .rod the latter curves outwardly as at 7 so as to eliminate the forma- PatentedOct. 19, 1915. Application fil'ed'jJuly 28,1914. Se'riallt'o. 853,728.

1 we w r tion of an abrupt shoulder at} this point.'

Encirclingthe core 2 at the curved portion 7 thereof and having the outer surface flush with the 'circumferentially enlarged end of the coreiis a sleeve 8 havin the end sursplit longiturounding the curved portion dinally for a portion'o'f its length as at 9 i and such split portions spaced apart equal distances about the sleeve, and the opposite end formed withan outwardly projecting circumferentially extendingflange 10. En-

circling the core 2 immediately above the Y flange l0 and placed in face to face contact rubber' or. other fabric, while surrounding:

the shank above thewasher' is a. sleeve 12 having the bore therein of a cross sectional I configuration corresponding withthat' of the threaded portion of the core so that rotation of the sleeve 12 independently of the I core is eliminated. F ormedon one end of the sleeve 12 and bearing against the adjacent face of'the Washer 11 is an outwardly projecting flange 13, while threaded onto the threaded end of the core andadapted to nut14.

In practice, the bit end 6 of the core is abut theadjacent end'of the sleeve 12 is a I forced through the hole or aperture in the pipe and the plug rotated so as to ream out the aperture and thereby eliminate ragged] edges and form a new wall for the aperture.

equal to the distance between the reamingl end of the core and the washer 15, thereby placing the sleeve 8 within the opening, the washer 15 surrounding thesleeve 8 immediately adjacent to the flange 10. In'this position of the plugthe. sleeve v12 is held against rotation and thenuft 1 1 revolved about the threaded end of the core thereby drawing the latter'throughthelsleeves 8 and 12 In theinitial longitudinal movement of the core through the sleeve 8 the curved portion 7 spreads the split end of such sleeve while in-the continued movement ofth'e core the enlarged" circ'un iferential" portion thereof rides into the sleeve and so effectively spreads-the latter against the inner wall of I with the latter is a washer 11 formed of the pipe and holds the same in this condition, the inner spread end of the sleeve co-' acting with the washer 15 and flange 10 to form a fluid tight patch for the pipe.

In order to rotate the plug as an entirety so that the reamer bit may cut the side wall of the hole and to rotate the nut 14 independently of the remaining parts of the plug so as to spread the expansion sleeve I employ a chuck comprising a lower section 16 formed with a longitudinal bore 17 of cross sectional configuration corresponding to that of the sleeve 12. Threaded through the section 16 is a set screw 18 adapted to enter the bore and bind against the sleeve 12 when the chuck is applied to the plug. Connected to one end of the section 16 coaxial therewith and capable of rotation relatively thereto is the second section 19 of the chuck, such section being formed with an axial recess 20 contiguous the upper end of the bore v17 in the section 16, and a bore 21 contiguous the'recess 20 and coaxial therewith. The recess 20 corresponds in cross sectional configuration to that of the nut 14: and is adapt-' ed to receive the latter in the application of the chuck to the plug.

Formed on the lower section 16 and projecting outwardly therefrom are pivot ears 22 and pivoted between the ears 22 is one end of a locking lever 23 capable of swinging I movement and adapted. to enter the space between the lugs 24 formed on the side wall of thesection 19 of the chuck and projecting outwardly therefrom. When the lever 23 is in engagement with the lugs 2 1 a relative movement of the sections of the chuck is eliminated. Formed on the closed end of the chuck and projecting outwardly therefrom is a tang 25 adapted to be inserted in the socket of a brace so that the chuck may be rotated.

In operation, the chuck is placed over the I sleeve 12 and nut 14, the inner wall of the recess 20 abutting the nut 14, while the axially alining bore 17 and recess 20 receive the sleeve 12 and nut 14 respectively. The

lever 23 is now swung to locking position 'and'the chuck revolved. Inthe rotation of the chuck the reamer 6 cuts the wall of the hole in the pipe and carries the core into the pipe as previously. described. After the ex pansion sleeve has entered the pipe the lever 23 is swung to unlocking position and held so as to prevent rotation, of the section 1 60f the chuck, while the section 19 of the chuck continues to rotate. In this movement of the section 19 of thechuck the nut 1% is revolved thereby drawing the-core 2 through the axially alining sleeves 8 and 12 with the effect to expand the sleeve 8 as heretofore described.

From the foregoing description taken in connection with the accompanying drawings, the construction, .mode of operation variation may be made within the scope of the claims without departing from the spirit ofthe invention.

I claim:

1. Ina pipe patching device, a plug comprising a core having one end thereof enlarged circumferentially and formed to provide a reamer body adapted to penetrate the pipe, a sleeve surrounding said coreimmediately adjacent to the enlarged end portion thereof and designed to follow the reamer into the pipe, and means for moving said core relatively to said sleeve in a direction reverse to the first movement thereof whereby the sleeve will be expanded in the opening in the pipe.

2. In a pipe patching device, a plug adapted to penetrate the pipe and capable of expansion succeeding the application of the same to the pipe, a chuck for forcing the plug into the pipe, said chuck comprising two sections capable of relative rotary movement, means holding said sections against relative movement in the application of the plug to the pipe, said means also operable to hold one section against movement while allowing the rotation of the other section, and means operable from the movable sec tion to expand the plug.

3. In a pipe patching device, a plug comprising a core having one end thereof onlarged circumferentially and formed to provide a reamer bit adapted to penetrate the pipe, a sleeve surrounding said core immediately adjacent to the handle end portion thereof and designed to follow the reamer into the pipe, a flange on the upper end of said sleeve, a second sleeve surrounding said core coaxial with the first sleeve and having the outer surface thereof non-circular in cross section, a nut threaded onto said core adjacent to said last sleeve and means acting upon said last sleeve to rotate the plug as an entirety to pass the latter into the pipe or adapted to operate the nut independently of the remaining parts of the plug whereby J the core will be drawn through the first vide a reamer bit adapted to penetrate the pipe, a sleeve surrounding said core immediately adjacent to the enlarged end portion thereof and designed to follow the reamer into the pipe, a second sleeve surrounding the core coaxial with the first sleeve and rotatable with the core, a nut threaded upon the end oflthe core adjacent to said last sleeve, a chuck comprising a section surrounding said second sleeve, and a section surrounding said nut, and means whereby both sections may be rotated simultaneously, and the second section rotated independently of the firstsection.

5. In a pipe patching device, a plug comprising a core having one end thereof enlarged circumferentially and formed to provide a reamer bit adapted to penetrate the pipe, a sleeve surrounding said core immediately adjacent to the enlarged end portion thereof and designed to follow the reamer into the pipe, a second sleeve surrounding the core coaxial with the first sleeve and rotatable with the core, a nut threaded upon the end of the core adjacent to said last sleeve, a chuck comprising a section surrounding said second sleeve, a section surrounding said nut, and means locking said sections together for simultaneous movement and operable to release said sections whereby the second section may be actuated independently of the first section.

6. In a pipe patching device, a plug comprising a core having one end thereof enlarged circumferentially and formed to pro-- vide a reamer bit adapted to penetrate the pipe, a sleeve surrounding'said core immediately adjacent to the enlarged end portion thereof and designed to follow the reamer into the pipe, a second sleeve surrounding the core coaxial with the first sleeve and rotatable with the core, a nut threaded upon the end of the core adjacent to said last sleeve, a chuck comprising a section surrounding said second sleeve, a section surrounding said nut, means locking said sections together for simultaneous movement and operable torelease said sections whereby the second section may be actuated independently of the first section, and means carried by the first section for holding the latter to the second-named sleeve.

In testimony whereof I afiix my signa ture in presence of two witnesses.

, WILLIAM H. CROW. Witnesses:

L. D. CAMPBELL, ALTA L. CROW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

